Removing water from P trap/drain

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by moobiker, Aug 14, 2006.

  1. moobiker

    moobiker New Member

    Messages:
    10
    Location:
    Boise, ID
    Hi,

    I'm remodeling an upstairs bathroom, have demo'd the old (concrete) tub/shower and am preparing to install a jetted tub and freestanding shower, either Kerdi, Wedi or maybe Tile-Redi pan. I have to move and extend the existing shower bath drain, and I’m concerned about causing a flood to the 1st floor when I cut the connection to the P trap, with the water that is now standing in the drain. Can anyone tell me how much water I can expect to drain out, and does anyone have any tricks/tips for removing the standing water?

    Mike
  2. prashster

    prashster New Member

    Messages:
    941
    It's not that much. A few cupfuls (assuming it's a 2" pipe").

    Try a turkey baster.

    Or stuff a coiled hand towel down the drain.
  3. jdkimes

    jdkimes Engineer

    Messages:
    181
    Location:
    Littleton, CO
    Tape a pipe or tube to a wet vac and suck it out...with the vacuum.
  4. moobiker

    moobiker New Member

    Messages:
    10
    Location:
    Boise, ID
    All good ideas, thanks - and sorry again for being a noob and accidentally double posting
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,933
    Location:
    New England
    The trap is normally a U about 4-6" across at the top, so you can figure the volume.
  6. Lakee911

    Lakee911 I&C Engineer (mostly WWTP)

    Messages:
    1,328
    Location:
    Columbus, OH
    Thanks for the clarification ... I was wondering what the wetvac was for if I was gonna suck on it ;)

    Jason
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